Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Textbook Question
Chapter 6, Problem 6.10P
For the circuit in Figure 6.14,
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4. A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed,
(a) The circuit will become un stable
(c) The voltage gain will increase
(b) the voltage gain will decrease
(d) the Q-point will shift
5. For a common-collector amplifier, RE =1002, r'e= 10 2, and Bac=150. The ac input resistance at the base
is:
(a) 1500 2
(b) 15 k2
(c) 110 Q
(d) 16.5 k2
6. If a 10 mV signal is applied to the base of the emitter-follower circuit in Question 5, the output signal is
approximately
(a) 100 mV
(b) 150 mV
(c) 1.5 V
(d) 10 mV
Given the MOSFET in Figure 6 has bran) = 200 mA at VGs = 4 V and V(Tn) = 2 V;
i. Plot the transfer characteristic curve for the MOSFET.
b)
i.
Determine the operating point Vasa, Ioa and Vosa for the circuit.
ii. Calculate the value of the transconductance gm at the Q-point.
iv. Determine the voltage gain and input impedance of the amplifier.
15 V
1 kn.
Coe
1.5 M2.
Cin
33 kn.
Vn
30 ka
Figure 6
Us
1. For the circuit in Figure 6.58, RE = 2 k, R1 = R2 = 50 k and the transistor parameters are ß =
100, VE B(on) = 0.7 V, and VA = 125 V. (a) Determine the small-signal voltage gain Av = vo/vs.
(b) Find the resistances Rib and Ro. (Ans. (a) Av = 0.925, (b) Rib = 4.37 k, Ro = 32.0)
3+1=
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Vcc= +5 V
Rab 1
RE
Cc₂
IR₂
bot
Vo
R₁ =
500 £2
Figure 6.58 Figure for Exercises TYU 6.11.
Chapter 6 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 6 - The circuit parameters for the circuit in Figure...Ch. 6 - For the circuit in Figure 6.3, assume transistor...Ch. 6 - For the circuit in Figure 6.14(a), let =90 ,...Ch. 6 - Using the circuit and transistor parameters given...Ch. 6 - Consider the circuit in Figure 6.18. The circuit...Ch. 6 - Repeat Example 6.4 if the quiescent collector...Ch. 6 - For the circuit in Figure 6.31, let RE=0.6k ,...Ch. 6 - Prob. 6.6EPCh. 6 - The parameters of the circuit shown in Figure 6.28...Ch. 6 - For the circuit shown in Figure 6.31, let =100 ,...
Ch. 6 - Design the circuit in Figure 6.35 such that it is...Ch. 6 - For the circuit in Figure 6.28, the smallsignal...Ch. 6 - The circuit in Figure 6.38 has parameters V+=5V ,...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - (a) Assume the circuit shown in Figure 6.40(a) is...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - Reconsider the circuit in Figure 6.38. Let =120 ,...Ch. 6 - For the circuit shown in Figure 6.48, let =120 ,...Ch. 6 - For the circuit in Figure 6.31, use the parameters...Ch. 6 - Consider the circuit in Figure 6.38. Assume...Ch. 6 - For the circuit shown in Figure 6.49, let VCC=12V...Ch. 6 - Consider the circuit and transistor parameters...Ch. 6 - For the circuit in Figure 6.54, the transistor...Ch. 6 - Assume the circuit in Figure 6.57 uses a 2N2222...Ch. 6 - For the circuit in Figure 6.58, RE=2k , R1=R2=50k...Ch. 6 - Prob. 6.12TYUCh. 6 - For the circuit shown in Figure 6.63, the...Ch. 6 - Prob. 6.14TYUCh. 6 - For the circuit shown in Figure 6.64, let RS=0 ,...Ch. 6 - Consider the circuit in Figure 6.70(a). Let =100 ,...Ch. 6 - In the circuit in Figure 6.74 the transistor...Ch. 6 - Discuss, using the concept of a load line, how a...Ch. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Sketch the hybrid- equivalent circuit of an npn...Ch. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Sketch a simple emitter-follower amplifier circuit...Ch. 6 - Sketch a simple common-base amplifier circuit and...Ch. 6 - Compare the ac circuit characteristics of the...Ch. 6 - Prob. 13RQCh. 6 - Prob. 14RQCh. 6 - (a) Determine the smallsignal parameters gm,r ,...Ch. 6 - (a) The transistor parameters are =125 and VA=200V...Ch. 6 - A transistor has a current gain in the range 90180...Ch. 6 - The transistor in Figure 6.3 has parameters =120...Ch. 6 - Prob. 6.5PCh. 6 - For the circuit in Figure 6.3, =120 , VCC=5V ,...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The circuit in Figure 6.3 is biased at VCC=10V and...Ch. 6 - For the circuit in Figure 6.14, =100 , VA= ,...Ch. 6 - Prob. 6.11PCh. 6 - The parameters of the transistor in the circuit in...Ch. 6 - Assume that =100 , VA= , R1=33k , and R2=50k for...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - For the circuit in Figure P6.15, the transistor...Ch. 6 - Prob. D6.16PCh. 6 - The signal source in Figure P6.18 is s=5sintmV ....Ch. 6 - Consider the circuit shown in Figure P6.19 where...Ch. 6 - Prob. 6.20PCh. 6 - Figure P6.21 The parameters of the transistor in...Ch. 6 - Prob. 6.22PCh. 6 - For the circuit in Figure P6.23, the transistor...Ch. 6 - The transistor in the circuit in Figure P6.24 has...Ch. 6 - For the transistor in the circuit in Figure P6.26,...Ch. 6 - If the collector of a transistor is connected to...Ch. 6 - Consider the circuit shown in Figure P6.13. Assume...Ch. 6 - For the circuit in Figure P6.15, let =100 , VA= ,...Ch. 6 - Consider the circuit in Figure P6.19. The...Ch. 6 - The parameters of the circuit shown in Figure...Ch. 6 - Consider the circuit in Figure P6.26 with...Ch. 6 - For the circuit in Figure P6.20, the transistor...Ch. 6 - In the circuit in Figure P6.22 with transistor...Ch. 6 - For the circuit in Figure P6.24, the transistor...Ch. 6 - Prob. 6.40PCh. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - For the ac equivalent circuit in Figure P6.42,...Ch. 6 - The circuit and transistor parameters for the ac...Ch. 6 - Consider the circuit in Figure P6.45. The...Ch. 6 - For the transistor in Figure P6.47, =80 and...Ch. 6 - Consider the emitterfollower amplifier shown in...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - In the circuit shown in Figure P6.51, determine...Ch. 6 - The transistor current gain in the circuit shown...Ch. 6 - Consider the circuit shown in Figure P6.47. The...Ch. 6 - For the circuit in Figure P6.54, the parameters...Ch. 6 - Figure P6.59 is an ac equivalent circuit of a...Ch. 6 - The transistor in the ac equivalent circuit shown...Ch. 6 - Consider the ac equivalent commonbase circuit...Ch. 6 - Prob. 6.62PCh. 6 - The transistor in the circuit shown in Figure...Ch. 6 - Repeat Problem 6.63 with a 100 resistor in series...Ch. 6 - Consider the commonbase circuit in Figure P6.65....Ch. 6 - For the circuit shown in Figure P6.66, the...Ch. 6 - The parameters of the circuit in Figure P6.67 are...Ch. 6 - For the commonbase circuit shown in Figure P6.67,...Ch. 6 - Consider the circuit shown in Figure P6.69. The...Ch. 6 - In the circuit of Figure P6.71, let VEE=VCC=5V ,...Ch. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - The transistor parameters in the ac equivalent...Ch. 6 - Consider the circuit shown in Figure 6.38. The...Ch. 6 - For the circuit shown in Figure 6.57, the...
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- 1. For the following circuit assume re = 30.6 1 a. Draw the small signal equivalent circuit. b. Find the input impedance. c. Find output impedance. d. Find the voltage gain. e. Find the current gain. 4.72 10Farrow_forwardWe examined the common source amplifier shown in the figure in the 5th experiment. The selection criterion of the input capacitance is XCin = 0.1Rin. Calculate the required input capacitance value, Cin , if an input signal with a frequency of 4 kHz is applied.arrow_forwardFor the circuit of Figure 2. Carry out the analysis in DC and small signal with www.w www www.www Vt=0.7 V, Kn(W/L) = 4 mA/V. Ignore the Early effect. Determine: (a) The current in DC ID. (b) The gains vo/v₁, io/ii (c) The input resistance Rin and output resistance Rout. wwwwww 06402 www Ca HH {ama Ο ΜΩ www.11 Figura 2: 0.51 k www.li 12 V • 27 ΚΩ Ca +1₁ -0% 4.7 karrow_forward
- In the circuit shown in Example 6.4 (Figure 6.42), assume that the values of Rg = 10 kn, Rc 100 92, VBB = 5 V, and Vcc = 10 V. Assume that the current gain is 100. Calculate the transistor currents and voltages across different junctions. VBB + HAND WRITTEN ONLY, RB IB Rc VcB_++ [/c VBE VCE E Vccarrow_forwarda. In AC, how are the capacitors treated? b. In AC, how are DC sources treated? c. What is the amplifier configuration of Figure 4? d. What is the expected phase shift of the sinusoidal input at the output side? e. What is Zi across RG, the gate resistor? f. It is the IC in its smallest form. g. The most commonly used metal as interconnect of the chip to external peipheral. h. How is pin 1 of the chip determined? i. An IC package similar to a DIP but with the pins bent outward. j. Which sensors are packed as IC?arrow_forwardDesign a common-emitter amplifier to provide a small-signal voltage gain of approximately -10. 1. Consider the circuit shown in Figure 1. Show the following calculations in your notebook: Calculate a value for Rc so that A, z –10 Calculate values for R1 and R2 so that the circuit is bias stable and near the center of the load line. (Note: Use the datasheet for the 2N5209 transistor to make your calculations more accurate). Vcc = 10 V R1 Rc Cc2 Cci RL Vs R, REj = 499 Q Figure 1: Common-emitter amplifier for part #1arrow_forward
- Solve for Collector Resistance (RC)arrow_forward6.4) Explain conceptually whygm( sat) andgare the same. Where, g is conductance and gm(sat) is saturation transconductance.arrow_forwardFill in the table VB VC VE Ic LE I8 fre IT gm 5V Consider the circuit given at the right. 600k 1.5k =0.7, Vauo, B=165) 100uF Vo 1k 100uF a) Perform DC analysis and calculate all VB =? VC:? branch currents, node voltages, and small signal parameters 3K VE=? Rout b) Draw a small-signal equivalent model n Vin Rin 400K c) Calculate Ri, Rout, and Ay=Vou/Vin -5Varrow_forward
- 6.12 The parameters of the transistor in the circuit in Figure P6.12 are ß = 150 and VA = 0. (a) Determine R1 and R2 to obtain a bias-stable circuit with the Q-point in the center of the load line. (b) Determine the small-signal voltage gain A, = v,/vs. v* = +5 V Rc=1.2 kQ Cc R2 Rg = 0.2 k2 V==-5V Figure P6.12arrow_forwardFor the circuit of Figure 2. Carry out the analysis in DC and small signal with wwwwwww wwwww www wwwwwwwwwwwwwww Vt=0.7 V, Kn(W/L) = 4 mA/V. Ignore the Early effect. Determine: (a) The current in DC ID. www.www (b) The gains vo/v₁, io/ii (c) The input resistance Rin and output resistance Rout. wwwwwwwwwww 1/ 0.6 k w o Ca ΙΜΩ www.11 12 V 0.51 k Figura 2: wwwwwwwwwwwwwwww • 2.7 ΚΩ Ca +₁₁ U 4.7 karrow_forwardThe transistor in the circuit shown in Figure P6.58 has B = 100 and VA = 0. (a) Determine the quiescent values IC Q and VEC Q. (b) Determine the small-signal voltage gain Av = vo/vs. Figure p6.58 Rg= 10 k2 Rc3= 5 k2 50 k2 v* = +10 V V-=-10 V Figure P6.58arrow_forward
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